Before planting it is a good idea to find your USDA Zone info to figure out your garden schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

By referring to the USDA zone info for Hercules it's a good idea to determine when you can plant geranium.

Planting Calendar for Geranium

Frost tolerance for geranium:	Not tolerant of frost.
When to plant:	After the last frost has passed.

Geranium require warm weather which means that it is necessary to wait until it warms up after the last frost before you can plant them.

The earliest that you can plant geranium in Hercules is March. However, you really should wait until April if you don't want to take any chances.

The last month that you can plant geranium and expect a good harvest is probably September. Any later than that and your geranium may not have a chance to really do well. You can get started a few weeks earlier by starting your geranium indoors.

Last Frost Date

The average date of last frost is February 15 in Hercules. You should expect an average low temperature of 25°F in the coldest months of winter.

Keep in mind that USDA zone info for Hercules is not always accurate and the actual date of last frost will vary from year to year. Since half of the time in Hercules you get a frost after February 15 be ready to protect your geranium if you have a surprise late frost.

USDA Zone Info for Hercules

Here is the info for USDA Zone 9b.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	25°F
Highest Expected Low	30°F

This means that on a really cold year, the coldest it will get is 25°F. On most years you should be prepared to experience lows near 30°F.

Plants to Grow in Hercules

You may be interested in your other planting guides for Hercules.